Html ActiveRecord:：语句在Exchangesnew中无效

显示/home/dilek/Desktop/booky/app/views/exchanges/new.html.erb，其中第7行出现：

PG:：UndefinedColumn:错误：column books.status不存在 第1行：…..*来自books.user_id=$1和books.s

：从books.user_id=$1和books.status=$2的图书中选择图书。*

 <div class="form-group m-3">
    <h4 class="mb-3">Please Select Book</h4>
    <%= form.select(:offer_book_id, @books.map{|book| [book.title, book.id]},{},{:class=>"form-control form-control-lg col-3"})%>
  </div>
  <button type="submit" class="btn btn-primary m-3 ml-5">Submit</button>
<% end %>

---

那么你的问题是什么？